Arc extinguishing chamber outer cover of automatic change-over switch

The utility model relates to an arc extinguishing chamber outer cover, and especially relates to an arc extinguishing chamber outer cover of an automatic change-over switch. The utility model discloses a vacuum circuit breaker, which comprises a housing, the side wall of one end of the housing is provided with an insulating cover, the outer side walls of the insulating cover and the housing are respectively provided with a side plate, and the front end wall and the rear end wall of the insulating cover are respectively provided with a contact system group. The arc extinguishing chamber outer cover of the automatic change-over switch is compact in structure and good in operation performance, and the product stability is improved. 本实用新型涉及一种灭弧室外罩，尤其涉及一种自动转换开关的灭弧室外罩。包括罩壳，所述的罩壳的一端侧壁设有绝缘罩，所述的绝缘罩与罩壳的外侧壁分别设有侧板，所述的绝缘罩的前端壁与后端壁中分别设有触头系统组。一种自动转换开关的灭弧室外罩结构紧凑，操作性能出，提高产品稳定性。